EP 1575157 B1 20081008 - DRIVER FOR PIEZOELECTRIC ACTUATORS
Title (en)
DRIVER FOR PIEZOELECTRIC ACTUATORS
Title (de)
TREIBER FÜR PIEZOELEKTRISCHE AKTUATOREN
Title (fr)
DISPOSITIF DE COMMANDE D'ACTIONNEURS PIÉZO-ÉLECTRIQUES
Publication
Application
Priority
- JP 0315840 W 20031211
- JP 2002363294 A 20021216
Abstract (en)
[origin: EP1575157A1] To provide a driver for driving piezoelectric actuators with drastically reduced drive currents during on/off switch control, thereby reducing the power consumption of an overall device. Each of the plural piezoelectric actuators 1a to 1h is composed of a plate and piezoelectric sheets attached to the opposed surfaces of the plate. A positive feeder line 19 or a negative feeder line 21 is connected to the opposite side of each piezoelectric sheet to the side attached to the plate. The controller 27 on-controls the piezoelectric sheets of each of the piezoelectric actuators 1a to 1h by selectively applying a positive or negative drive voltage thereto. Thereafter, the controller 27 turns off the drive voltage applied to the piezoelectric sheets subjected to on-control and simultaneously with this, turns on a drive voltage to the piezoelectric sheets of any other one the piezoelectric electric actuators 1a to 1h to be driven next. <IMAGE>
IPC 8 full level
H01L 41/04 (2006.01); H02N 2/06 (2006.01); H01L 41/09 (2006.01)
CPC (source: EP KR US)
H02N 2/06 (2013.01 - KR); H02N 2/067 (2013.01 - EP US); H10N 30/2042 (2023.02 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT TR
DOCDB simple family (publication)
EP 1575157 A1 20050914; EP 1575157 A4 20070905; EP 1575157 B1 20081008; CN 100553105 C 20091021; CN 1726634 A 20060125; DE 60324021 D1 20081120; ES 2314262 T3 20090316; HK 1086114 A1 20060908; JP 4037870 B2 20080123; JP WO2004055966 A1 20060420; KR 100653673 B1 20061205; KR 20050084300 A 20050826; TW 200417127 A 20040901; TW I241062 B 20051001; US 2006012937 A1 20060119; WO 2004055966 A1 20040701
DOCDB simple family (application)
EP 03778796 A 20031211; CN 200380106305 A 20031211; DE 60324021 T 20031211; ES 03778796 T 20031211; HK 06106069 A 20060526; JP 0315840 W 20031211; JP 2004560619 A 20031211; KR 20057010906 A 20050614; TW 92135111 A 20031212; US 53682505 A 20050815